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United States Patent | 5,067,153 |
Willie ,   et al. | November 19, 1991 |
A transmission of subscriber data occurs between subscriber equipment in communication systems in order to be able to display such subscriber data on a display of subscriber equipment of a call partner. The display of the subscriber data of what is referred to as secret subscriber equipment at the call partner is prevented. The secret status of such subscriber equipment can be canceled in general or call-associated with identification information that is generated and transmitted on the basis of an identification function activated with cancel secrecy information.
Inventors: | Willie; Klaus (Munich, DE); Kienberger; Helmut (Munich, DE); Marwitz; Erika (Munich, DE) |
Assignee: | Siemens Aktiengesellschaft (Berlin and Munich, DE) |
Appl. No.: | 589385 |
Filed: | September 27, 1990 |
Sep 28, 1989[DE] | 3932498 | |
Nov 15, 1989[DE] | 3938000 |
Current U.S. Class: | 379/142.05; 379/142.17; 380/257 |
Intern'l Class: | H04K 001/00; H04K 009/00; H04M 001/24 |
Field of Search: | 379/34,142 380/48,23 |
4320258 | Mar., 1982 | McDonald | 379/142. |
4876717 | Oct., 1989 | Barron et al. | 380/25. |
4893325 | Jan., 1990 | Pankonen et al. | 379/142. |
4937862 | Jun., 1990 | Kosich | 379/34. |
4942598 | Jul., 1990 | Davis | 379/142. |